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Finding the Fourth Proportional to 431,987.35, 596,137.37 and 238,396.54

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Solution

The fourth proportional to 431,987.35, 596,137.37 and 238,396.54 is: 328,984.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,987.35 : 596,137.37 = 238,396.54 : x
  2. Step 2: Convert to fraction form
    431,987.35/596,137.37 = 238,396.54/x
  3. Step 3: Cross multiply
    431,987.35x = 596,137.37 × 238,396.54
  4. Step 4: Simplify right side
    431,987.35x = 142,117,086,372.70
  5. Step 5: Solve for x
    x = 142,117,086,372.70/431,987.35
  6. Step 6: Final answer
    x = 328,984.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.